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Thanks for great infoI havea siemens HMI- MP 277 talking to a CPU S71200 work perfectWe wanted to replicate CPU and have a plug and play spareWe bought spareS7 1200 same firmware V 2.2We copied program via Memory card We think no error identical to original - We thinkWhen we test the spare CPU it does not workThe HMI should initiliaze CPU startcycle or cycle inwhich our spareCPU does not see the correct initilaztion that original CPU can see from HMIDO you know any procedure I can I make two S71200 exactly identical with all tags and initial configuration and evrythingany support is appreciated

Thanks for great infoI havea siemens HMI- MP 277 talking to a CPU S71200 work perfectWe wanted to replicate CPU and have a plug and play spareWe bought spareS7 1200 same firmware V 2.2We copied program via Memory card We think no error identical to original - We thinkWhen we test the spare CPU it does not workThe HMI should initiliaze CPU startcycle or cycle inwhich our spareCPU does not see the correct initilaztion that original CPU can see from HMIDO you know any procedure I can I make two S71200 exactly identical with all tags and initial configuration and evrythingany support is appreciated

With Firmware 2.2 you have to capture the original values via watch table, swap plcs, download program, and then use the saved watch table values and modify them all once after the replacement plc is back online.